diff -r 0ede7ca157e2 -r 8aee27d46208 util/symtable.hh
--- a/util/symtable.hh	Fri Dec 26 09:39:18 2014 +0000
+++ b/util/symtable.hh	Fri Dec 26 09:57:02 2014 +0000
@@ -42,7 +42,7 @@
 
 
 
-template<typename value_type, value_type null_value> class symtable_c {
+template<typename value_type> class symtable_c {
   /* Case insensitive string compare copied from
    * "The C++ Programming Language" - 3rd Edition
    * by Bjarne Stroustrup, ISBN 0201889544.
@@ -86,30 +86,30 @@
     void push(void); /* create new inner scope */
     int  pop(void);  /* clear most inner scope */
 
-    void set(const char *identifier_str, value_t value);
-    void set(const symbol_c *symbol, value_t value);
-    void insert(const char *identifier_str, value_t value);
-    void insert(const symbol_c *symbol, value_t value);
+    void set(const char *identifier_str, value_t value);    // Will change value associated to string if already in map. Will create new entry if string not in map.
+    void set(const symbol_c *symbol, value_t value);        // Will change value associated to string if already in map. Will create new entry if string not in map.
+    void insert(const char *identifier_str, value_t value); // insert a new (string,value) pair. Give an error if string already in map associated to different value!
+    void insert(const symbol_c *symbol, value_t value);     // insert a new (string,value) pair. Give an error if string already in map associated to different value!
 
-    /* Search for an entry. Will return end_value() if not found */
-    value_t end_value(void) {return null_value;}
-    value_t find_value(const char *identifier_str);
-    value_t find_value(const symbol_c *symbol);
+    /* Search for an entry. Will return end() if not found */
+    iterator               end  (void);
+    iterator               find (const char     *identifier_str);
+    iterator               find (const symbol_c *symbol        );
 
 
   /* iterators ... */
   /* NOTE: These member functions are incorrect, as the returned iterator will not iterate through the inner_scopes!! */
   /*       We simply comment it all out, as they are not currently needed!                                            */
   #if 0
-    iterator               find (const char *identifier_str) {return _base.find(identifier_str);}
-    iterator               begin()                           {return _base.begin();}
-    const_iterator         begin()  const                    {return _base.begin();}
-    iterator               end()                             {return _base.end();}
-    const_iterator         end()    const                    {return _base.end();}
-    reverse_iterator       rbegin()                          {return _base.rbegin();}
-    const_reverse_iterator rbegin() const                    {return _base.rbegin();}
-    reverse_iterator       rend()                            {return _base.rend();}
-    const_reverse_iterator rend()   const                    {return _base.rend();}
+    iterator               find (const char *identifier_str)
+    iterator               begin()                          
+    const_iterator         begin()  const                   
+    iterator               end()                            
+    const_iterator         end()    const                   
+    reverse_iterator       rbegin()                         
+    const_reverse_iterator rbegin() const                   
+    reverse_iterator       rend()                           
+    const_reverse_iterator rend()   const                   
   #endif
     /* debuging function... */
     void print(void);